What would happen if an Iguanodon and a Velociraptor went head to head? Find out in Discovery Head to Head: Dinosaurs This unique book allows kids to flip the two stacks of pages to put (some unlikely) dinosaur pairings in battle. Each dinosaur is given a score based on criteria such as speed and intelligence, and the dinosaur with the higher number wins the battle. Children will also learn more about each dinosaur species on the back of each card. Kids will enjoy hours of entertainment as they flip the pages and put their favorite dinosaurs head to head